<template>
  <div id="login-container">
    <div id="login-box">
      <div id="logo-box">
        <img src="../assets/img/logo.png" alt />
      </div>

      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules">
        <el-form-item prop="username">
          <el-input v-model="loginForm.username">
            <i slot="prefix" class="iconfont icon-user"></i>
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="loginForm.password">
            <i slot="prefix" class="iconfont icon-3702mima"></i>
          </el-input>
        </el-form-item>
        <el-row>
          <el-col :push="15">
            <el-button type="primary" @click="login()">登录</el-button>
            <el-button type="info" @click="$refs.loginFormRef.resetFields()"
              >重置</el-button
            >
          </el-col>
        </el-row>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  methods: {
    //管理员登录系统
    login() {
      //登录表单做验证
      this.$refs.loginFormRef.validate(async valid => {
        //valid===true：表单验证成功
        //valid===false：表单验证失败
        // console.log(valid);
        if (valid === true) {
          //axios带着“用户名和密码”到达服务器端做有效性验证
          var { data: dt } = await this.$http.post("login", this.loginForm);
          console.log(dt);
          if (dt.meta.status !== 200) {
            return this.$message.error(dt.meta.msg);
          }
          // 通过浏览器的sessionStorage记录服务器返回的token信息
          window.sessionStorage.setItem("token", dt.data.token);
          //编程式导航，进行路由跳转执行/home
          this.$router.push("/home");
        }
      });
    }
  },
  data() {
    return {
      // 给 各个表单域 定义校验规则
      loginFormRules: {
        // required:非空  message:错误提示  trigger:触发校验机制
        username: [
          { required: true, message: "请输入用户名称", trigger: "blur" }
        ],
        password: [{ required: true, message: "请输入密码", trigger: "blur" }]
      },

      // 用户登录表单数据对象(用户名、密码)
      loginForm: {
        username: "",
        password: ""
      }
    };
  }
};
</script>

<style lang="less" scoped>
#login-container {
  background-color: #2b4b6b;
  height: 100%;
  overflow: hidden;

  #login-box {
    width: 450px;
    height: 304px;
    background-color: #fff;
    border-radius: 4px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);

    .el-form {
      position: absolute;
      bottom: 0;
      width: 100%;
      padding: 20px;
      box-sizing: border-box;
    }

    #logo-box {
      width: 130px;
      height: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 8px;
      box-shadow: 0 0 10px #eee;
      position: absolute;
      left: 50%;
      transform: translate(-50%, -50%);
      background-color: #fff;
    }
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
</style>
